填空题
A—full screen B—operation system
C—display device D—internal memory
E—keyboard F—central processing unit
G—network card H—mouse
I—hard disk J—website
K—cancel a command L—download
M—homepage N—anti-virus software
O—exit WINDOWS P—World Wide Web ______杀毒软件 ______操作系统
【参考答案】
N, B